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Polluted by sewage 3,081 hours in 2025
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We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for North Norfolk, here you can see overflows in red, the darker the red, the more the CSO overflowed that day.
Each CSO has a row, the most recent data is on the right hand side.
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Donate Now| Company | Site Name | Receiving Waterway | Overflow Days | Total Duration (hours) | Total Duration (days) |
|---|---|---|---|---|---|
| Anglian Water | Cromer STW | North Sea | 73 | 730 h 11m | 30.42 |
| Anglian Water | Mundesley-Knapton Road WRC | North Sea | 58 | 633 h 4m | 26.38 |
| Anglian Water | Erpingham - Calthorpe Bridge Terminal Pumping Station | Scarrow Beck | 33 | 575 h 52m | 23.96 |
| Anglian Water | NORTH WALSHAM STW | Dilham Canal | 23 | 505 h 45m | 21.04 |
| Anglian Water | HORNING-KNACKERS WOOD STW | River Ant | 21 | 358 h 34m | 14.92 |
| Anglian Water | Cromer STW | North Sea | 13 | 67 h 12m | 2.79 |
| Anglian Water | Erpingham - Calthorpe Bridge Terminal Pumping Station | Scarrow Beck | 8 | 51 h 59m | 2.12 |
| Anglian Water | Mundesley-Knapton Road WRC | North Sea | 10 | 47 h 13m | 1.96 |
| Anglian Water | ALDBOROUGH-THWAITE HILL FM STW | Scarrow Beck River Bure | 6 | 36 h 7m | 1.5 |
| Anglian Water | BRISTON STW | River Bure | 2 | 8 h 48m | 0.33 |
| Anglian Water | Promenade Sewer Storage Tank | North Sea | 15 | 7 h 13m | 0.29 |
| Anglian Water | BRISTON STW | River Bure | 6 | 6 h 29m | 0.25 |
| Anglian Water | LANGHAM STW (NORFOLK) | River Stiffkey | 3 | 6 h 27m | 0.25 |
| Anglian Water | MELTON CONSTABLE-BURGH BECK SP | River Glaven | 4 | 5 h 23m | 0.21 |
| Anglian Water | NORTH WALSHAM STW | Dilham Canal | 1 | 4 h 59m | 0.17 |
| Anglian Water | LANGHAM STW (NORFOLK) | River Stiffkey | 1 | 4 h 44m | 0.17 |
| Anglian Water | MELTON CONSTABLE-BURGH BECK SP | River Glaven | 1 | 4 h | 0.17 |
| Anglian Water | STALHAM STW | River Ant | 1 | 3 h 59m | 0.12 |
| Anglian Water | West Runton Water Lane Pumping Station | North Sea | 4 | 3 h 30m | 0.12 |
| Anglian Water | STALHAM STW | River Ant | 1 | 2 h 59m | 0.08 |
| Anglian Water | West Runton Water Lane Pumping Station | North Sea | 1 | 2 h 44m | 0.08 |
| Anglian Water | East Runton Beach Road Terminal Pumping Station | North Sea | 3 | 2 h 39m | 0.08 |
| Anglian Water | STALHAM-MILL ROAD TPS | Stalham Dyke | 2 | 2 h 35m | 0.08 |
| Anglian Water | Sheringham East Beach Sewage Tank | North Sea | 3 | 2 h | 0.08 |
| Anglian Water | GIMINGHAM-NR MILL TPS | Mundesley Beck | 9 | 1 h 58m | 0.04 |
| Anglian Water | Holt Main Road WRC | River Glaven | 2 | 1 h 45m | 0.04 |
| Anglian Water | North Walsham-Bluebell Road Combined Sewer Overflow | River Ant | 3 | 1 h 45m | 0.04 |
| Anglian Water | Holt Main Road WRC | River Glaven | 2 | 1 h 14m | 0.04 |
| Anglian Water | GIMINGHAM-NR MILL TPS | Mundesley Beck | 1 | 0 h 23m | 0 |
| Anglian Water | WEYBOURNE-BEACH LANE SP | Pond To To Weybourne Hope | 0 | 0 h | 0 |
| Anglian Water | Cromer Promenade Terminal Pumping Station | North Sea | 0 | 0 h | 0 |
| Anglian Water | North Walsham-Bluebell Road Combined Sewer Overflow | River Ant | 0 | 0 h | 0 |
| Anglian Water | STALHAM-MILL ROAD TPS | Stalham Dyke | 0 | 0 h | 0 |
| Anglian Water | WELLS-FREEMAN ST OV | Unnamed Marsh Dyke North Sea | 0 | 0 h | 0 |
| Anglian Water | Sheringham East Beach Sewage Tank | North Sea | 0 | 0 h | 0 |
| Anglian Water | East Runton Beach Road Terminal Pumping Station | North Sea | 0 | 0 h | 0 |
| Anglian Water | NORTH WALSHAM STW | Unknown River Ant | 0 | 0 h | 0 |
| Anglian Water | Mundesley - The Prom Pumping Station | North Sea | 0 | 0 h | 0 |
| Anglian Water | LUDHAM-WOMACK STAITHE TPS | Un Womack Water | 0 | 0 h | 0 |
| Anglian Water | MUNDESLEY-DELL CHALET PK OV | River Mun | 0 | 0 h | 0 |
| Anglian Water | ALDBOROUGH-THWAITE HILL FM STW | Scarrow Beck River Bure | 0 | 0 h | 0 |
| Anglian Water | TRIMINGHAM-RESERVOIR OV | River Mun | 0 | 0 h | 0 |
| Anglian Water | Promenade Sewer Storage Tank | North Sea | 0 | 0 h | 0 |
| Anglian Water | LUDHAM-WOMACK STAITHE TPS | Un Womack Water | 0 | 0 h | 0 |
| Anglian Water | WELLS-FREEMAN STREET STW | Wells Creek | 0 | 0 h | 0 |
| Anglian Water | GREAT WALSINGHAM STW | River Stiffkey | 0 | 0 h | 0 |
| Anglian Water | TRIMINGHAM-RESERVOIR OV | River Mun | 0 | 0 h | 0 |
| Anglian Water | HORNING-KNACKERS WOOD STW | River Ant | 0 | 0 h | 0 |
EDM (Event Duration Monitoring) data and Consented Discharges to Controlled Waters with Conditions from Environment Agency & Data Map Wales, and Scottish Water
Experimental derived data from Thames Water API, Some data may be missing or inaccurate. Live sewage data from Stream Water API
Uses Environment Agency rainfall data from the real-time data API (Beta) - Rainfall data is delayed by up to two days.
This website is intended to provide an accurate representation of the Environment Agency data. The data is hard to use, and thus some errors may have been made. If you find something that is incorrect, please raise an issue at the GitHub issues page and we'll endeavour to fix it quickly.
This project is not associated, approved or endorsed by any of the companies whose logos you see here.
Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org